So, today I have a very boring post for you. I'm simply going to list the single-letter GDB commands, as noted in the post title. To make this list useful, I will separate each command with a hyphen, and then follow it with the "real" command. Enjoy!
b - break c - continue d - delete f - frame h - help i - info j - jump k - kill l - list n - next p - print q - quit r - run s - step t - thread u - until x - examineHave a nice day!